CN100378593C - Image forming apparatus - Google Patents
Image forming apparatus Download PDFInfo
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- CN100378593C CN100378593C CNB2004100747919A CN200410074791A CN100378593C CN 100378593 C CN100378593 C CN 100378593C CN B2004100747919 A CNB2004100747919 A CN B2004100747919A CN 200410074791 A CN200410074791 A CN 200410074791A CN 100378593 C CN100378593 C CN 100378593C
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- imaging device
- recording medium
- toner
- intermediate transfer
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
- G03G15/0105—Details of unit
- G03G15/0131—Details of unit for transferring a pattern to a second base
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
Abstract
An image forming apparatus includes: a recording medium supplying device that supplies a recording medium; an image carrier arranged beneath the recording medium supplying device in a gravitation direction; a carrying passage that transports the recording medium supplied from the recording medium supplying device, and arranged between the recording medium supplying device and the image carrier and having a horizontal carrying portion which extends approximately in a horizontal direction and serves to carry the recording medium; and a transferring unit that transfers, at the horizontal carrying portion of the carrying passage, a toner carried by the image carrier onto a lower surface in the gravitation direction of the recording medium supplied from the recording medium supplying device.
Description
Technical field
The present invention relates to a kind of imaging device, for example printer, duplicating machine and facsimile recorder.
Background technology
Such imaging device is known, the recording medium supply apparatus that wherein is used for recording medium is supplied to the recording section of document image is located on the recording section, and the operator can supply to this recording medium supply apparatus (referring to JP-A-2002-091105) from the imaging device top with recording medium.
Summary of the invention
Yet, the imaging device of this routine has a problem, promptly, because image is replicated or duplicates on the recording medium of the photoreceptor below in the recording section, therefore it is long to transport passage (recording medium transports passage along this and is transported), thus with record thereon remain the required time of the recording medium of output image (hand-to-hand fight in tights print the time) also longer.
In view of this, the present invention aims to provide a kind of imaging device, and it can supply with recording medium from image bearing piece top, and can shorten with record thereon and remain required time of recording medium of output image.
According to an aspect of the present invention, provide a kind of imaging device, comprising: recording medium supply apparatus, it supplies with recording medium; Image bearing piece is located at the below of recording medium supply apparatus along gravity direction; Transport passage, it transports the recording medium of supplying with from recording medium supply apparatus, and is located between recording medium supply apparatus and the image bearing piece, and has level and transport part, and this level is transported part and extended and be used to transport recording medium generally along horizontal direction; Transfer printing unit, it transports the toner that will be transported by image bearing piece at the part place in the level of transporting passage and is transferred to the recording medium supplied with from recording medium supply apparatus along on the lower surface of gravity direction; And counter-rotating delivery unit, be used in counter-rotating, with transfer printing has the recording medium of toner to be sent to more upstream one side of transporting passage with respect to transfer printing unit by transfer printing unit on it, wherein, the counter-rotating delivery unit is located between recording medium feed unit and the image bearing piece.
Description of drawings
To make above-mentioned purpose of the present invention and advantage become more obvious by preferred embodiments of the present invention will be described in detail with reference to the annexed drawings, in the accompanying drawings:
Fig. 1 is the front view according to the imaging device of the embodiment of the invention;
Fig. 2 shows the cut-open view of the fixing device that uses in the imaging device according to this embodiment;
Fig. 3 is the synoptic diagram that is used for according to the main heat source of the image-generating unit of the imaging device of this embodiment and toner Cartridge; And
Fig. 4 A-4D shows the view according to the distortion of the imaging device of this embodiment respectively, and shows the front view of each distortion.
Embodiment
Referring to accompanying drawing, below will explain embodiments of the invention.
Fig. 1 shows the synoptic diagram of the imaging device 10 of the embodiment of the invention.This imaging device 10 comprises: recording medium supply apparatus 12, recording section 14, intermediate transfer device 16, fixing device 18 and control section 20.
Recording medium supply apparatus 12 is located at the top of imaging device 10 and has the recording medium holding portion 22 of housing recording.This recording medium holding portion 22 is provided with pick-up roller 24, and this pick-up roller 24 is located at the left upper portion of recording medium holding portion 22.In the place ahead of pick-up roller 24, donor rollers 26 and delay roller 28 are oppositely arranged.
Therefore, the recording medium (medium) that is supplied from recording medium holding portion 22 by pick-up roller 24 is in donor rollers 26 and postpone to be released (solve) the cooperation between the roller 28, and only has uppermost medium to be directed into to transport on the passage 30.The recording medium that is directed is blocked roller 38 temporarily to be stopped.Recording medium is regularly passing through between secondary transfer roller 96 and the secondary transfer printing backing roll 92, thereby toner image is transferred on the recording medium.Transfer printing has the recording medium of toner image to be transported to fixing device 18 by conveyer 36 on it, thereby makes toner image.Photographic fixing has the recording medium of toner image to be carried towards distributing roller 50 by the normal rotation of reverse roll 46 on it.At last, recording medium is discharged to the discharge section 58 that is located at recording medium supply apparatus 12 tops by distributing roller 50 from escape hole 32.
Under the situation of duplex printing, the counter-rotating of the recording medium that photographic fixing has a toner image on it by reverse roll 46 is directed into oppositely to transport passage 52 and turn back to once more and stops roller 38.Turn back to that the recording medium that stops roller 38 is temporarily stopped and at a transfer printing chromatic colour image regularly.The toner image of transfer printing is by fixing device 18 photographic fixing.Photographic fixing has the recording medium of toner image to be carried towards distributing roller 50 by the normal rotation of reverse roll 46, and is discharged to discharge section 58 by distributing roller 50 from escape hole 32.
Image-generating unit 62a-62d comprises respectively: photoreceptor 70a-70d, charger 72a-72d, optical writing device 74a-74d, developer 76a-76d and cleaning device 78a-78d.Charger 72a-72d gives photoreceptor 70a-70d uniform charging respectively.Optical writing device 74a-74d be located at image-generating unit 62a-62d below.Optical writing device 74a-74d generates scanning light beam towards the photoreceptor 70a-70d that has charged, to form sub-image respectively on photoreceptor 70a-70d.Charger 76a-76d comprises: developer roll 80a-80d, first stirs/transports part 81a-81d, second and stirs/transport part 82a-82d and the 3rd and stir/transport part 83a-83d.Charger 76a-76d stirs/transports part 81a-81d, second by first and stir/transport part 82a-82d and the 3rd and stir/transport part 83a-83d and will stir from the toner that toner Cartridge 64a-64d receives/be transported to developer roll 80a-80d, thus the image development that uses developer roll 80a-80d to generate on photoreceptor 70a-70d respectively becomes visual toner image.Cleaning device 78a-78d has scraper plate 84a-84d.After toner image has been transferred to after a while with the intermediate transfer part of describing 86 from photoreceptor 70a-70d on, cleaning device 78a-78d utilizes scraper plate 84a-84d will remain in the toner on the photoreceptor 70a-70d and strikes off from the paper scrap of recording medium, and they are contained among the cleaning device 78a-78d self.
Fig. 2 at length shows fixing device 18.
Incidentally, fixing device 18 is arranged so that temperature sensor 112 detections of the surface temperature of warm-up mill 104 by for example thermopair, control section 20 is based on being applied to voltage on the well heater intermittently by temperature sensor 112 detected temperature, thereby makes the temperature of warm-up mill 104 remain predetermined temperature.
In addition, warm-up mill 104 and heat-barrier material 106a can separate with backer roll 108 and heat-barrier material 106b, and can move around back shaft 60 and recording section 14 and intermediate transfer device 16 unitary rotation.
Each of heat- barrier material 106a, 106b all has vacuum heat insulation material 114, and this vacuum heat insulation material 114 has 0.03W/mK or lower temperature conductivity and 3mm or bigger thickness.Heat- barrier material 106a, 106b are provided with on inwall for example has 60% or the reflection horizon 116 of high reflectance more, and is provided with on outer wall and for example is the cover cap 118 of plastics.Make by for example alumite or through metals such as the aluminium of mirror finish, stainless steel, iron plates in reflection horizon 116.When making reflection horizon 116 by alumite, reflection horizon 116 can be electroplated to obtain 0.5 or lower radiance by nickel, chromium, palladium, tin, gold or silver.
By this way, (wherein backer roll 108 is arranged in the top of warm-up mill 104 to fixing device 18 in an approximate vertical direction, and warm-up mill 104 and backer roll 108 are covered by heat- barrier material 106a, 106b in vertical direction) can effectively utilize the heat that well heater 110 produces, thus suppress heat from wherein outwards distributing.
In addition, warm-up mill 104 can be IH type (Induction Heating Fuser, an induction heat fuser).The warm-up mill 104 that is configured to the IH type can use heat effectively, and this is because not energy supply during its inoperative, so and because it does not use well heater can improve vertically heat insulation.Therefore, even fixing device 18 is located at the approximate centre position of imaging device 10, also can reduce heat affecting to other parts (for example intermediate transfer part 86 that around fixing device 18, is provided with).
Below explanation is used for the thermal source of image-generating unit 62a-62d and toner Cartridge 64a-64d.
Image-generating unit 62a-62d constitutes except the color of formation image differs from one another in an identical manner.Therefore, only explain image-generating unit 62a below.
Figure 3 illustrates the main heat source that is used for image-generating unit 62a and toner Cartridge 64a.Fixing device 18 with well heater 110 is of thermal source that are used for image-generating unit 62a and toner Cartridge 64a.The heat that is produced by well heater 110 makes the temperature of well heater 110 tops be higher than the temperature of well heater 110 belows.The downside of well heater 110 is covered by heat-barrier material 106a.The toner supply port 68a of image-generating unit 62a is positioned at fixing device 18 belows, thereby is difficult to be subjected to the heat affecting of well heater 110.
Photoreceptor 70a is driven by motor 122 by the driving running part 120a of for example gear.The developer roll 80a of developer 76a, first stirs/transports part 81a, second and stirs/transport part 82a and the 3rd and stir/transport the driving running part 120b of part 83a by gear for example and driven by motor 122.Photoreceptor 70a is suitable for by reducing skin-friction coefficient and making the transmission efficiency that drives running part 120a be 60% or higher 0.4Nm of providing or lower axial torque.The developer roll 80a of developer 76a, first stirs/transports part 81a, second and stirs/transport part 82a and the 3rd and stir/transport part 83a and be suitable for providing 0.3Nm or lower total axial torque by the transmission efficiency that make to drive running part 120a for 70%.
On the other hand, the toner Cartridge 64a that is arranged on intermediate transfer device 16 tops supplies to toner T the developer 76a that is located at intermediate transfer device 16 belows.Particularly, toner Cartridge 64a utilizes gravity to supply with toner T by transporting pipeline 124a from toner supply port 68a.The toner T that is supplied with by toner Cartridge 64a comprises the binder resin (binding resin) that is used to improve integrality at least.This binder resin is a crystalline resins, and the fusing point of its Main Ingredients and Appearance is 50 ℃ to 120 ℃.
Therefore, the heat that is produced by well heater 110 can prevent that toner T from stopping at toner supply port 68a place.Whole toner Cartridge 64a can be located at fixing device 18 below.
By this way, be used for the heat that image-generating unit 62a produces to 64d to 62d and toner Cartridge 64a by minimizing, and the amount that reduces by heat makes toner fixing to recording medium, even fixing device 18 is located at the approximate centre position of imaging device 10, also can reduce heat affecting to other parts (for example, the intermediate transfer part 86 that around fixing device 18, is provided with).
Below will explain the operation of imaging device 10.
When control section 20 sends imaging signal, photoreceptor 70a-70d is charged equally by charger 72a-72d.Based on imaging signal, light beam is launched to the photoreceptor 70a-70d that has charged from optical writing device 74a-74d.Make the face exposure of photoreceptor 70a-70d from optical writing device 74a-74d emitted light beams, to form sub-image.The image development of the photoreceptor 70a-70d that is formed by optical writing device 74a-74d is a toner image yellow, pinkish red, blue or green, black, and overlappingly primary transfer to intermediate transfer part 86.In this primary transfer, the used toner that remains among the photoreceptor 70a-70d is struck off and is reclaimed by cleaning device 78a-78d.
On the other hand, supply with signal based on recording medium, the recording medium that is contained in the recording medium holding portion 22 is supplied with by donor rollers 26, discharges by postponing roller 28, and is directed into and transports passage 30.Recording medium is by stopping that roller 38 temporarily stops, and regularly is directed between secondary transfer roller 96 and secondary transfer printing backing roll 92 one.When this recording medium is directed between secondary transfer roller 96 and secondary transfer printing backing roll 92, the toner image of primary transfer to the intermediate transfer part 86 by secondary transfer roller 96 and secondary transfer printing backing roll 92 and secondary transfer printing to recording medium.After secondary transfer printing, the used toner that remains on the intermediate transfer part 86 is struck off and is reclaimed by intermediate transfer clearer 82.
The recording medium that has the toner image of transfer printing is directed into fixing device 18.By fixing device 18, this toner image by by the hot pressing of warm-up mill 104 and backer roll 108 photographic fixing to recording medium.Photographic fixing has the recording medium of toner image to be directed into reverse roll 46 on it.The recording medium that is directed to reverse roll 46 transports to distributing roller 50 by the normal rotation of reverse roll 46.At last, by distributing roller 50, recording medium is discharged to the discharge section 58 that is located at recording medium supply apparatus 12 tops from discharging port 32.Under the situation of duplex printing, the counter-rotating of the recording medium that photographic fixing has a toner image on it by reverse roll 46 is directed into oppositely transports passage 52, and turns back to once more and stop roller 38.Turn back to the recording medium that stops roller 38 at a transfer printing chromatic colour image regularly.The toner image of transfer printing is able to photographic fixing by fixing device 18.Photographic fixing has the recording medium of toner image to transport to distributing roller 50 by the normal rotation of reverse roll 46 on it, and is discharged to discharge port 58 by distributing roller 50 from discharging port 32.
Below will explain the distortion of imaging device 10.
Fig. 4 A-4D shows the view of the distortion of imaging device 10.Fig. 4 A to 4D shows the front view of first to the 4th distortion respectively.
Shown in Fig. 4 A, in first distortion of imaging device 10, recording section 14 and intermediate transfer device 16 become a unit, and this unit is around back shaft 60 rotatable motions.The lower unit 102 of fixing device 18 can rotate around back shaft 60 equally.Recording section 14, intermediate transfer device 16 and lower unit 102 can rotational motions together in a preset range.Become the recording section 14 of a unit and intermediate transfer device 16 and lower unit 102 independent rotation in their preset range respectively.For example, recording section 14 and intermediate transfer device 16 and lower unit 102 had rotated motion together in preset range after, becoming the recording section 14 of a unit and intermediate transfer device 16 and lower unit 102 can rotational motion independently in their preset range respectively.
Shown in Fig. 4 B, in second distortion of imaging device 10, recording section 14 and intermediate transfer device 16 are respectively around back shaft 60 rotational motion independently.The rotational motion together in a preset range of recording section 14 and intermediate transfer device 16.The recording section 14 and the intermediate transfer device 16 that become a unit can rotational motions independently in their preset range respectively.For example, recording section 14 and intermediate transfer device 16 had rotated motion together in preset range after, recording section 14 and intermediate transfer device 16 can rotational motions independently in their preset range respectively.
Shown in Fig. 4 C, in the 3rd distortion of imaging device 10, intermediate transfer device 16 and lower unit 102 become a unit, and this unit and recording section 14 can center on back shaft 60 rotational motions.In addition, becoming the intermediate transfer device 16 of a unit and lower unit 102 and recording section 14 can rotational motion together in a preset range, perhaps rotates independently in their preset range respectively.For example, the intermediate transfer device 16 that becomes a unit and lower unit 102 and recording section 14 had rotated motion together in preset range after, becoming the intermediate transfer device 16 of a unit and lower unit 102 and recording section 14 can rotational motion independently in their preset range respectively.
Shown in Fig. 4 D, in the 4th distortion of imaging device 10, recording section 14, intermediate transfer device 16 and lower unit 102 can center on back shaft 60 rotational motions.Recording section 14, intermediate transfer device 16 and lower unit 102 can rotational motions together in a preset range.Recording section 14 and intermediate transfer device 16 and lower unit 102 can rotate in their preset range respectively independently.Perhaps, recording medium and intermediate transfer device 16 or intermediate transfer device 16 and lower unit 102 can rotational motions together in their preset range respectively.For example, recording section 14, intermediate transfer device 16 and lower unit 102 have rotated motion together in a preset range after, recording section 14 and intermediate transfer device 16 rotate motion together in preset range, then recording section 14 and intermediate transfer device 16 rotate motion respectively independently in preset range.
According to an aspect of the present invention, provide a kind of imaging device, having comprised: recording medium supply apparatus is used to supply with recording medium; Image bearing piece is located at the below of recording medium supply apparatus along gravity direction; Transport passage, be used to transport the recording medium of supplying with from recording medium supply apparatus, it is located between recording medium supply apparatus and the image bearing piece, and has level and transport part, and this level is transported part horizontal-extending and be used to transport recording medium substantially; And transfer printing unit, being used for transporting the part place and will being transferred to the lower surface of recording medium by the toner that image bearing piece transports along gravity direction in the level of transporting passage, this recording medium is supplied with by recording medium supply apparatus.
According to above-mentioned setting, recording medium can be fed into the recording medium supply apparatus above image bearing piece, and transports passage and can shorten, thereby can shorten with writing down the required time of recording medium for the treatment of output image thereon.
Preferably, this imaging device can also comprise fixation unit, being used for will be by the toner fixing of transfer printing unit transfer printing to recording medium, and this fixation unit is provided with respect to transfer position approximate horizontal ground, and transfer printing unit is transferred to toner on the recording medium at this transfer position place.Be provided with according to this, can shorten the distance between transfer position and fixation unit, therefore can shorten and transport passage, thereby can shorten with writing down the required time of recording medium for the treatment of output image thereon.
Preferably, this fixation unit can also comprise: fixing member is used for applying heat and pressure to recording medium and the toner that is transferred on the recording medium; And the reflection horizon, be set to and the fixing member 20mm or nearer of being separated by, and to have radiance be 0.5 or lower metal surface.Be provided with according to this, can suppress to distribute by fixation unit, and can use the heat that applies by fixing member effectively by the heat that fixing member applies.Therefore, recording medium can supply to the recording medium supply apparatus of image bearing piece top, and can shorten and transport passage.
Preferably, this imaging device can also comprise the temperature detecting unit of the temperature that is used to detect fixation unit, and fixing member heats based on the temperature that is detected by temperature detecting unit at least.According to this setting, can prevent that fixing member from unnecessarily discharging heat, and use the heat that produces by fixing member effectively.
Preferably, in this imaging device, fixation unit can be made as IH (induction heat fuser) type.Therefore, when not using fixation unit, can be to the fixation unit energize.In addition, do not need well heater is carried out attaching/detaching or electrical connection.This has improved heat insulation and permission in the axial direction and has effectively used the heat that is applied by fixing member.
Preferably, in this imaging device, fixation unit can have thermofin, and this thermofin has 3mm or higher thickness and 0.3W/mK or lower temperature conductivity.Be provided with according to this, can suppress to discharge by fixation unit, and effectively use the heat that applies by fixing member by the heat that fixing member applies.Therefore, recording medium can supply to the recording medium supply apparatus above image bearing piece, and can shorten and transport passage.
Preferably, this imaging device can also comprise the counter-rotating delivery unit, this counter-rotating delivery unit is used in counter-rotating recording medium (transfer printing has toner by transfer printing unit it on) is sent to a side with respect to the more upstream of transporting passage of transfer printing unit, and the delivery unit that reverses is located between recording medium feed unit and the image bearing piece.Be provided with according to this, recording medium can supply to the recording medium supply apparatus of image bearing piece top, and can shorten and be used for the two sides and all be printed on the required time of recording medium for the treatment of output image.
Preferably, in this imaging device, image bearing piece can comprise photoreceptor.This imaging device can also comprise: a plurality of photoreceptors that transport sub-image; A plurality of chargers of giving these photoreceptor chargings; Exposing unit is used for a plurality of photoreceptors that expose respectively; And a plurality of developing cells, being used for by toner the image development that transports on a plurality of photoreceptors, image bearing piece is the intermediate transfer part, the toner image that develops by a plurality of developing cells is transferred on it from a plurality of photoreceptors.The number of colors that is transferred to the toner on the recording medium can be single or multiple.
Preferably, this imaging device can also comprise a plurality of photoreceptor drive units, is used for driving respectively a plurality of photoreceptors, when these a plurality of photoreceptors are driven, these a plurality of photoreceptor drive units have 0.4Nm or lower shaft torque respectively, and 60% or higher driving force transmission efficiency.Be provided with according to this, can reduce the thermal loss that is produced by the photoreceptor drive unit, thereby can suppress to cause constituting the deterioration or the inconvenience of each assembly of imaging device owing to heat.This has improved the integrated level that constitutes each assembly of imaging device.
Preferably, this imaging device can also comprise a plurality of developing cell drive units, is used for driving respectively a plurality of developing cells, and these a plurality of developing cell drive units have 0.3Nm or lower total shaft torque respectively, and 70% or higher driving force transmission efficiency.Be provided with according to this, can reduce the thermal loss that is produced by the photoreceptor drive unit, thereby can suppress to cause constituting the deterioration or the inconvenience of each assembly of imaging device owing to heat.This has improved the integrated level that constitutes each assembly of imaging device.
Preferably, in this imaging device, the intermediate transfer part is set so, makes to begin and towards the direction that transmits recording medium from transfer position, the spacing distance that level is transported part and intermediate transfer part increases gradually; Transfer position is positioned at described level transports on the part, and the intermediate transfer part is transferred to toner image on the recording medium in this transfer position.This has made things convenient for swipes from middle transfer that it has the recording medium of toner.
This imaging device can also comprise a plurality of toner supplies unit, is used for respectively toner supply being arrived a plurality of developing cells.Fixation unit has the hot generation unit that is located at a plurality of developing cells top, is used for the toner of heating transfer to the recording medium, and a plurality of toner supplies unit is located at a plurality of supplies and has between the developing cell and hot generation unit of toner.Be provided with according to this, can prevent to cause toner to be deposited in a plurality of toner supplies unit owing to the heat that hot generation unit produces.In addition, can utilize gravity so that toner is supplied to a plurality of developing cells from a plurality of toner supplies unit, thereby make the simple in structure of this a plurality of toner supplies unit.
This imaging device can also comprise a plurality of toner supplies unit, is used for respectively toner supply being arrived a plurality of developing cells.Fixation unit has the hot generation unit that is located at a plurality of developing cells top, be used for the toner of heating transfer to the recording medium, and this a plurality of toner supplies unit (it supplies with yellow at least, pinkish red, cyan toner at least) is located at a plurality of the supply at least respectively and has between the developing cell and hot generation unit of Huang, magenta, cyan toner.According to this setting, can reduce owing to the thermal effect of hot generation unit, thereby prevent that Huang, magenta, cyan toner are deposited in a plurality of toner supplies unit owing to the heat that is produced by hot generation unit causes at least yellow at least, magenta, cyan toner.
Preferably, this imaging device can also comprise: a plurality of photoreceptor cleaning units are used to clean a plurality of photoreceptors; And intermediate transfer part cleaning unit, be used to clean the intermediate transfer part.These a plurality of photoreceptor cleaning units be located at the intermediate transfer part below, and their top keeps respectively and a plurality of photoreceptor sliding contacts, and this intermediate transfer part cleaning unit be located at the intermediate transfer part below, and its top keeps and the sliding contact of intermediate transfer part.
According to this setting, photoreceptor cleaning unit and intermediate transfer part cleaning unit can utilize gravity to clean photoreceptor and intermediate transfer part, thereby simplify the structure of photoreceptor cleaning unit and intermediate transfer part cleaning unit.
Preferably, in this imaging device, a plurality of at least photoreceptors, a plurality of developing cell and intermediate transfer part can be configured to move along the direction of leaving transfer printing unit is whole.
Preferably, in this imaging device, a plurality of at least photoreceptors, a plurality of developing cell, intermediate transfer part and hot generation unit can be configured to move along the direction of leaving transfer printing unit is whole.
Preferably, this imaging device can also comprise: first module, and it comprises a plurality of photoreceptors and a plurality of developing cell at least; With Unit second, it comprises the intermediate transfer part at least.This first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
Preferably, this imaging device can also comprise: first module, and it comprises a plurality of photoreceptors, a plurality of developing cell and intermediate transfer part at least; With Unit second, it comprises hot generation unit at least.This first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
Preferably, this imaging device can also comprise: first module, and it comprises a plurality of photoreceptors and a plurality of developing cell at least; With Unit second, it comprises intermediate transfer part and hot generation unit at least.This first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
Preferably, this imaging device can also comprise: first module, and it comprises a plurality of photoreceptors and a plurality of developing cell at least; Unit second, it comprises the intermediate transfer part at least; With Unit the 3rd, it comprises hot generation unit at least.This first module, Unit second and Unit the 3rd are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
Preferably, this first module can be configured in a preset range with the second unit rotational motion.
Preferably, at least one of this first module and Unit second can be configured to rotational motion independently in a preset range.
Preferably, this first module can be configured in a preset range with Unit second and the 3rd unit rotational motion.
Preferably, at least one of this first module, Unit second and Unit the 3rd can be configured to rotational motion independently in a preset range.According to these settings, when safeguarding (for example, the obstruction of cleaning recording medium and replacing assembly), can reduce the quantity of operation, and can safeguard by uniaxially.
Preferably, the toner that transports on image bearing piece comprises that at least binder resin is to improve globality.Preferably, this binder resin can be a crystalline resins, and its Main Ingredients and Appearance has 50 ℃ to 120 ℃ fusing point.Therefore, can improve the photographic fixing characteristic of toner on recording medium, and fixation unit can have flexible setting.This has shortened and has transported passage, and has shortened and be used for the two sides and all be printed on the required time of recording medium for the treatment of output image.
As mentioned above, according to the present invention, recording medium can supply to the imaging device above image bearing piece, and can shorten with writing down the required time of recording medium for the treatment of output image thereon.
Although show with reference to specific embodiment and described the present invention, by instruction wherein, variations and modifications all are conspicuous for those skilled in the art.These variations and modification obviously are considered to fall into spirit of the present invention defined in the appended claims, scope and concern.
Claims (32)
1. imaging device comprises:
Recording medium supply apparatus, it supplies with recording medium;
Image bearing piece, along gravity direction be located at recording medium supply apparatus below;
Transport passage, it transports the recording medium of being supplied with by recording medium supply apparatus, and is located between recording medium supply apparatus and the image bearing piece, and has level and transport part, and this level is transported part and extended and be used to transport recording medium generally along horizontal direction;
Transfer printing unit, it transports the part place in the level of transporting passage, and the toner that will be transported by image bearing piece is transferred to the recording medium supplied with by recording medium supply apparatus along on the lower surface of gravity direction; And
The counter-rotating delivery unit, be used in counter-rotating,, be sent to more upstream one side of transporting passage with respect to transfer printing unit with transfer printing has the recording medium of toner by transfer printing unit on it, wherein, the counter-rotating delivery unit is located between recording medium feed unit and the image bearing piece.
2. imaging device as claimed in claim 1 is characterized in that, also comprises fixation unit, and it will be by the toner fixing of described transfer printing unit transfer printing to recording medium,
Wherein, this fixation unit is with respect to the direction setting of a transfer position along approximate horizontal, and wherein transfer printing unit is transferred to toner on the recording medium at this transfer position place.
3. imaging device as claimed in claim 2 is characterized in that, described fixation unit comprises:
Fixing member is used for applying heat and pressure to recording medium and the toner that is transferred on the recording medium; And
The reflection horizon is set to and the fixing member 20mm or nearer of being separated by, and to have radiance be 0.5 or lower metal surface.
4. imaging device as claimed in claim 3 is characterized in that, also comprises the temperature detecting unit that is used to detect described fixation unit temperature,
Wherein, fixing member heats based on the temperature that is detected by this temperature detecting unit at least.
5. imaging device as claimed in claim 2 is characterized in that described fixation unit is made as the IH type.
6. imaging device as claimed in claim 2 is characterized in that described fixation unit has thermofin, and this thermofin has 3mm or higher thickness and 0.3W/mK or lower temperature conductivity
7. imaging device as claimed in claim 1 is characterized in that described image bearing piece comprises photoreceptor.
8. imaging device as claimed in claim 1 is characterized in that, also comprises:
A plurality of photoreceptors that transport sub-image;
A plurality of chargers of giving these photoreceptor chargings;
Exposing unit is used to the photoreceptor that exposes; And
A plurality of developing cells will transport image development on photoreceptor with toner;
Wherein, image bearing piece comprises the intermediate transfer part, and the toner image that develops by developing cell is transferred on this intermediate transfer part from photoreceptor.
9. imaging device as claimed in claim 8, it is characterized in that, also comprise a plurality of photoreceptor drive units, be used to drive photoreceptor, each of this photoreceptor drive unit all has 0.4Nm or lower shaft torque and 60% or higher driving force transmission efficiency.
10. imaging device as claimed in claim 8, it is characterized in that, also comprise a plurality of developing cell drive units, be used to drive a plurality of developing cells, this developing cell drive unit has 0.3Nm or lower total shaft torque, and 70% or higher driving force transmission efficiency.
11. imaging device as claimed in claim 8 is characterized in that, described intermediate transfer part so is set, and makes to begin and towards the direction that transmits recording medium, the distance that described level is transported between part and the described intermediate transfer part increases from transfer position; Described transfer position is positioned at described level transports on the part, and described intermediate transfer part is transferred to toner image on the recording medium at this transfer position place.
12. imaging device as claimed in claim 8 is characterized in that, also comprises a plurality of toner supplies unit, be used for respectively toner supply being arrived each developing cell,
Wherein, fixation unit comprises the hot generation unit that is located at described a plurality of developing cells top, be used for heating transfer to the recording medium toner and
Wherein, the toner supply unit is located to supply with has between the developing cell and hot generation unit of toner.
13. imaging device as claimed in claim 8 is characterized in that, also comprises a plurality of toner supplies unit, be used for respectively yellow at least, pinkish red, cyan toner being supplied to developing cell,
Wherein, fixation unit has the hot generation unit that is located at described a plurality of developing cells top, be used for heating transfer to the recording medium toner and
Wherein, this toner supply unit is located between a plurality of developing cells and the hot generation unit.
14. imaging device as claimed in claim 8 is characterized in that, also comprises:
A plurality of photoreceptor cleaning units are used to clean a plurality of photoreceptors; And
Intermediate transfer part cleaning unit is used to clean the intermediate transfer part,
Wherein, this photoreceptor cleaning unit be located at the intermediate transfer part below, and their top respectively with photoreceptor keep sliding contact and
Wherein, this intermediate transfer part cleaning unit be located at the intermediate transfer part below, and its top keeps and the sliding contact of intermediate transfer part.
15. imaging device as claimed in claim 1 is characterized in that, described at least photoreceptor, developing cell and intermediate transfer part can be configured to move along the direction of leaving transfer printing unit is whole.
16. imaging device as claimed in claim 8 is characterized in that, also comprises:
First module, it comprises photoreceptor and developing cell at least; And
Unit second, it comprises the intermediate transfer part at least,
Wherein, this first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
17. imaging device as claimed in claim 12 is characterized in that, described at least photoreceptor, developing cell, intermediate transfer part and hot generation unit move along the direction of leaving transfer printing unit is whole.
18. imaging device as claimed in claim 13 is characterized in that, described at least photoreceptor, developing cell, intermediate transfer part and hot generation unit move along the direction of leaving transfer printing unit is whole.
19. imaging device as claimed in claim 12 is characterized in that, also comprises:
First module, it comprises described photoreceptor, developing cell and intermediate transfer part at least; And
Unit second, it comprises described hot generation unit at least,
Wherein, this first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
20. imaging device as claimed in claim 13 is characterized in that, also comprises:
First module, its described at least photoreceptor, developing cell and intermediate transfer part of comprising; And
Unit second, it comprises described hot generation unit at least,
Wherein, this first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
21. imaging device as claimed in claim 12 is characterized in that, also comprises:
First module, it comprises described photoreceptor and developing cell at least; And
Unit second, it comprises described intermediate transfer part and hot generation unit at least,
Wherein, this first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
22. imaging device as claimed in claim 13 is characterized in that, also comprises:
First module, it comprises described photoreceptor and developing cell at least; And
Unit second, it comprises described intermediate transfer part and hot generation unit at least,
Wherein, this first module and Unit second are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
23. imaging device as claimed in claim 12 is characterized in that, also comprises:
First module, it comprises described photoreceptor and a plurality of developing cell at least;
Unit second, it comprises described intermediate transfer part at least; And
Unit the 3rd, it comprises described hot generation unit at least,
Wherein, this first module, Unit second and Unit the 3rd are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
24. imaging device as claimed in claim 13 is characterized in that, also comprises:
First module, it comprises described photoreceptor and a plurality of developing cell at least;
Unit second, it comprises described intermediate transfer part at least; With
Unit the 3rd, it comprises described hot generation unit at least,
Wherein, this first module, Unit second and Unit the 3rd are along the direction of leaving transfer printing unit around the back shaft rotational motion, and this back shaft is located at the position relative with transfer printing unit.
25. imaging device as claimed in claim 16 is characterized in that, described first module is with Unit second rotational motion in a preset range.
26. imaging device as claimed in claim 16 is characterized in that, the rotational motion independently in a preset range of at least one in described first module and the Unit second.
27. imaging device as claimed in claim 23 is characterized in that, the rotational motion in a preset range with Unit second and Unit the 3rd of described first module.
28. imaging device as claimed in claim 24 is characterized in that, the rotational motion in a preset range with Unit second and Unit the 3rd of described first module.
29. imaging device as claimed in claim 23 is characterized in that, the rotational motion independently in a preset range of at least one in described first module, Unit second and the Unit the 3rd.
30. imaging device as claimed in claim 24 is characterized in that, the rotational motion independently in a preset range of at least one in described first module, Unit second and the Unit the 3rd.
31. imaging device as claimed in claim 1 is characterized in that, the toner that transports on described image bearing piece comprises that at least binder resin is to improve globality.
32. imaging device as claimed in claim 31 is characterized in that, described binder resin comprises crystalline resins, and its Main Ingredients and Appearance has the fusing point in the scope from 50 ℃ to 120 ℃.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004015604A JP4697573B2 (en) | 2004-01-23 | 2004-01-23 | Image forming apparatus |
| JP2004015604 | 2004-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1645270A CN1645270A (en) | 2005-07-27 |
| CN100378593C true CN100378593C (en) | 2008-04-02 |
Family
ID=34792445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100747919A Expired - Fee Related CN100378593C (en) | 2004-01-23 | 2004-09-14 | Image forming apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7231165B2 (en) |
| JP (1) | JP4697573B2 (en) |
| CN (1) | CN100378593C (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7319210B2 (en) * | 2004-10-22 | 2008-01-15 | Canon Kabushiki Kaisha | Image heating apparatus |
| US7634208B2 (en) * | 2005-05-06 | 2009-12-15 | Canon Kabushiki Kaisha | Driving device, image forming apparatus including driving device, and control method therefor |
| JP4752373B2 (en) * | 2005-07-27 | 2011-08-17 | 富士ゼロックス株式会社 | Cleaning device and image forming apparatus |
| JP2007079142A (en) * | 2005-09-14 | 2007-03-29 | Ricoh Co Ltd | Heating device, fixing device, and image forming apparatus |
| US20070071515A1 (en) * | 2005-09-29 | 2007-03-29 | Samsung Electronics Co., Ltd. | Heat reflective layer for a fixing unit |
| JP2007322774A (en) * | 2006-06-01 | 2007-12-13 | Fuji Xerox Co Ltd | Image forming apparatus |
| JP4963244B2 (en) * | 2007-03-14 | 2012-06-27 | シャープ株式会社 | Fixing device and image forming apparatus having the same |
| JP5084622B2 (en) * | 2008-06-10 | 2012-11-28 | キヤノン株式会社 | Image forming apparatus |
| JP5233455B2 (en) * | 2008-07-09 | 2013-07-10 | 株式会社リコー | Transfer fixing device and image forming apparatus |
| JP2012103610A (en) * | 2010-11-12 | 2012-05-31 | Konica Minolta Business Technologies Inc | Fixing device and image forming apparatus |
| JP5481404B2 (en) * | 2011-01-24 | 2014-04-23 | 京セラドキュメントソリューションズ株式会社 | Fixing apparatus and image forming apparatus having the same |
| JP5504186B2 (en) * | 2011-01-24 | 2014-05-28 | 京セラドキュメントソリューションズ株式会社 | FIXING DEVICE, IMAGE FORMING DEVICE EQUIPPED WITH THE FIXING DEVICE, AND METHOD FOR MANUFACTURING FIXING DEVICE |
| JP5481403B2 (en) * | 2011-01-24 | 2014-04-23 | 京セラドキュメントソリューションズ株式会社 | Fixing apparatus and image forming apparatus having the same |
| JP2013231816A (en) * | 2012-04-27 | 2013-11-14 | Fuji Xerox Co Ltd | Image forming device |
| JP6305228B2 (en) | 2014-06-10 | 2018-04-04 | キヤノン株式会社 | Package for image forming apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05134481A (en) * | 1991-11-14 | 1993-05-28 | Konica Corp | Color image forming device |
| JPH0844133A (en) * | 1994-07-05 | 1996-02-16 | Xerox Corp | Architecture of printing device |
| JP2001166556A (en) * | 1999-12-06 | 2001-06-22 | Brother Ind Ltd | Image forming device |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4394084A (en) * | 1979-02-12 | 1983-07-19 | Coulter Systems Corporation | Low-profile electrophotographic copying machine |
| JPH08190245A (en) * | 1995-01-12 | 1996-07-23 | Konica Corp | Image forming device |
| US5724642A (en) * | 1996-09-27 | 1998-03-03 | Xerox Corporation | Duplex color printing system with curl control by sheet rotation between printing opposing sides |
| JP3398064B2 (en) * | 1998-08-21 | 2003-04-21 | シャープ株式会社 | Image forming device |
| JP4292689B2 (en) * | 2000-06-23 | 2009-07-08 | コニカミノルタビジネステクノロジーズ株式会社 | Image forming apparatus |
| JP3987275B2 (en) | 2000-09-18 | 2007-10-03 | 株式会社リコー | Image forming apparatus |
| JP4509358B2 (en) * | 2000-11-14 | 2010-07-21 | 富士ゼロックス株式会社 | Intermediate transfer member and method for producing the same |
| JP2002162887A (en) * | 2000-11-28 | 2002-06-07 | Fuji Xerox Co Ltd | Color image forming device |
| JP4708574B2 (en) * | 2001-01-15 | 2011-06-22 | キヤノン株式会社 | Image forming apparatus |
| JP2003186322A (en) * | 2001-10-09 | 2003-07-04 | Canon Inc | Fixing apparatus and image-forming apparatus |
| JP3820973B2 (en) * | 2001-12-04 | 2006-09-13 | 富士ゼロックス株式会社 | Toner for electrophotography, method for producing the same, electrostatic image developer and image forming method |
| JP2003173124A (en) * | 2001-12-06 | 2003-06-20 | Ricoh Co Ltd | Image forming apparatus |
| JP2003215962A (en) * | 2002-01-21 | 2003-07-30 | Fuji Xerox Co Ltd | Fixing device and image forming device |
| US20050036023A1 (en) * | 2003-08-12 | 2005-02-17 | Xerox Corporation | Printer architecture with upper paper trays |
-
2004
- 2004-01-23 JP JP2004015604A patent/JP4697573B2/en not_active Expired - Fee Related
- 2004-09-14 CN CNB2004100747919A patent/CN100378593C/en not_active Expired - Fee Related
- 2004-09-15 US US10/940,712 patent/US7231165B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05134481A (en) * | 1991-11-14 | 1993-05-28 | Konica Corp | Color image forming device |
| JPH0844133A (en) * | 1994-07-05 | 1996-02-16 | Xerox Corp | Architecture of printing device |
| JP2001166556A (en) * | 1999-12-06 | 2001-06-22 | Brother Ind Ltd | Image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1645270A (en) | 2005-07-27 |
| US7231165B2 (en) | 2007-06-12 |
| JP4697573B2 (en) | 2011-06-08 |
| JP2005208390A (en) | 2005-08-04 |
| US20050163529A1 (en) | 2005-07-28 |
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